Ubuntu 12.10 is about to show up in its stable version this week. Users and developers who want to run or develop Java applications and applets on Ubuntu must have a copy of Java 7 (Update 7) installed on their systems. In this tutorial we will show you how to install JRE7 & JDK7 in Ubuntu 12.10 Quantal Quetzal or older. The tutorial is also applicable for Linux Mint 13 or older.JRE 7 Installation